<template>
  <div>
      <template v-for="item in this.menuList">
           <!-- el-menu 主菜单  el-submenu 子菜单  el-menu-item 内容项 -->
          <el-submenu :disabled="item.disabled" :index="item.id+''" :key="item.id+''" v-if="item.children.length>0">
            <template slot="title">
              <i :class="item.icon"></i>
              <span>{{ item.menuName }}</span>
            </template>
            <MenuTree :menuList="item.children"></MenuTree>
          </el-submenu>
          <el-menu-item v-else :disabled="item.disabled" :index="item.url+''" :route="item.url+''" :key="item.id+''"
           style="padding-left: 50px;" @click="savePath(item.url)" >
              <i :class="item.icon"></i>
              <span>{{ item.menuName }}</span>
          </el-menu-item>
      </template>
  </div>
</template>

<script>
export default {
  name: 'MenuTree',
  props: ['menuList'],
  mehtods:{
    //保存激活路径
    savePath(path){
      window.sessionStorage.setItem("activePath",path);
      //调用main.vue的activePath
      this.activePath = path;
    },

  }
}
</script>

<style>
/* 溢出处理 */
  .el-menu--collapse span, 
  .el-menu--collapse i.el-submenu__icon-arrow { 
    height: 0; 
    width: 0; 
    overflow: hidden; 
    visibility: hidden; 
    display: inline-block; }

</style>